/* sureno.ai — free classics reader (/books/read). Large print, read-aloud, bookmarks.
   Calm tokens from site.css. Prefix: bk-. Mobile first. */

.bk-page{--bk-gap:22px;padding-bottom:24px}
.bk-page .crumbs{margin-top:8px}
.bk-page h1{font-family:var(--display);font-weight:500;letter-spacing:-.02em}
.bk-lede{font-size:19px;color:var(--ink-2);max-width:60ch;margin:12px 0 0}
.bk-credit{font-size:15px;line-height:1.6;color:var(--muted);margin:30px 0 0;max-width:72ch}
.bk-credit a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.bk-note{font-size:14.5px;color:var(--muted);margin:10px 0 0}

/* ---------- covers ---------- */
.bk-cover{position:relative;display:block;aspect-ratio:2/3;border-radius:10px 14px 14px 10px;overflow:hidden;background:var(--bg-2);
  box-shadow:0 1px 2px rgba(30,42,47,.12),0 14px 28px -16px rgba(30,42,47,.55)}
.bk-cover::after{content:"";position:absolute;inset:0 auto 0 0;width:7%;background:linear-gradient(90deg,rgba(0,0,0,.18),rgba(255,255,255,.08) 60%,transparent)}
.bk-cover img{width:100%;height:100%;object-fit:cover;display:block}
.bk-cover.is-drawn{display:flex;flex-direction:column;justify-content:space-between;padding:14% 12% 12% 16%;color:#fdf8ee;
  background:linear-gradient(160deg,hsl(var(--bk-hue,170) 32% 34%),hsl(calc(var(--bk-hue,170) + 25) 38% 22%))}
.bk-cover-t{font-family:var(--display);font-size:clamp(15px,1.5vw,20px);line-height:1.2;font-weight:600;overflow-wrap:anywhere}
.bk-cover-a{font-size:13px;letter-spacing:.06em;text-transform:uppercase;opacity:.85}
.bk-cover-s{width:84px;flex:none}
.bk-cover-l{width:min(200px,52vw);flex:none;margin:0 auto}
.bk-cover-l .bk-cover-t{font-size:22px}

/* ---------- shelves ---------- */
.bk-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:26px 18px}
.bk-tile{display:flex;flex-direction:column;gap:5px;text-decoration:none;color:var(--ink);border-radius:14px}
.bk-tile .bk-cover{margin-bottom:8px;transition:transform .3s,box-shadow .3s}
.bk-tile:hover .bk-cover{transform:translateY(-4px) rotate(-.6deg);box-shadow:0 2px 4px rgba(30,42,47,.14),0 22px 36px -18px rgba(30,42,47,.6)}
.bk-tile-t{font-family:var(--display);font-size:18px;line-height:1.25;font-weight:500}
.bk-tile-a{font-size:15.5px;color:var(--muted);line-height:1.35}
.bk-tile-m{font-size:14px;color:var(--muted)}
.bk-grid-s{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}
.bk-grid-s .bk-cover-s{width:100%}

.bk-shelf-head{margin:10px 0 26px}
.bk-shelf-head h1{font-size:clamp(32px,4.4vw,50px);line-height:1.1;margin:10px 0 0;max-width:20ch}
.bk-find{display:flex;flex-direction:column;gap:8px;margin:0 0 26px;max-width:520px}
.bk-find label{font-weight:600;font-size:17px}
.bk-find input{min-height:54px;padding:12px 18px;border-radius:16px;border:1.5px solid var(--line-2);background:var(--surface);font-size:18px}
.bk-find input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.bk-none{font-size:17px;color:var(--muted)}

/* "Continue reading" and bookmarks, drawn by books.js from this browser's own memory */
.bk-continue-box,.bk-marks{margin:0 0 28px}
.bk-cards{display:grid;gap:12px;grid-template-columns:minmax(0,1fr)}
@media (min-width:760px){.bk-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
.bk-card{display:flex;gap:14px;align-items:center;padding:14px;border-radius:20px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);text-decoration:none;color:var(--ink);min-height:96px}
.bk-card .bk-cover{width:58px;flex:none;border-radius:6px 8px 8px 6px}
.bk-card-k{display:block;font-size:13.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--accent)}
.bk-card-t{display:block;font-family:var(--display);font-size:19px;line-height:1.25}
.bk-card-m{display:block;font-size:15px;color:var(--muted)}
.bk-card-go{margin-left:auto;flex:none;color:var(--accent)}
.bk-marks h2,.bk-continue-box h2{font-size:22px;margin:0 0 12px}
.bk-mark{display:flex;align-items:center;gap:10px}
.bk-mark .bk-card{flex:1;min-width:0}
.bk-mark-x{flex:none;min-width:48px;min-height:48px;border-radius:14px;border:1px solid var(--line-2);background:var(--surface);color:var(--muted);font-size:15px;cursor:pointer;padding:0 12px}
.bk-mark-x:hover{color:var(--danger);border-color:var(--danger)}

/* on /books */
.bk-home-shelf{margin:8px 0 40px;padding:24px 0 6px;border-top:1px solid var(--line)}
.bk-home-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px 24px;margin-bottom:20px}
.bk-home-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.2;max-width:22ch;margin:4px 0 0}
.bk-continue{margin:-4px 0 18px;font-size:17px}
.bk-continue a{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:3px}
@media (max-width:699px){
  .bk-grid-home{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding:4px 2px 14px;margin:0 -2px;-webkit-overflow-scrolling:touch}
  .bk-grid-home>li{flex:0 0 40%;scroll-snap-align:start}
}
@media (min-width:700px){.bk-grid-home{grid-template-columns:repeat(5,minmax(0,1fr))}}

/* ---------- one book ---------- */
.bk-book-top{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;align-items:start;margin:10px 0 28px}
.bk-book-copy h1{font-size:clamp(34px,4.6vw,54px);line-height:1.08;margin:10px 0 6px}
.bk-sub{font-family:var(--display);font-style:italic;font-size:22px;color:var(--ink-2);margin:0 0 10px}
.bk-by{font-size:21px;margin:0 0 4px;color:var(--ink)}
.bk-by span{color:var(--muted);font-size:17px}
.bk-tr{font-size:17px;color:var(--muted);margin:0 0 4px}
.bk-facts{font-size:17px;color:var(--muted);margin:10px 0 18px}
.bk-cta{display:flex;flex-wrap:wrap;gap:12px}
.bk-cta .btn{min-height:56px;font-size:18px}
.bk-cta .ric{width:22px;height:22px}
.bk-cta-note{margin:14px 0 0;font-size:17px}
.bk-cta-note a{color:var(--accent);font-weight:600;text-decoration:underline}
@media (min-width:700px){
  .bk-book-top{grid-template-columns:auto minmax(0,1fr);gap:40px}
  .bk-cover-l{width:230px;margin:0}
}
.bk-about{max-width:70ch;margin:0 0 20px}
.bk-about h2,.bk-toc h2,.bk-more h2{font-size:26px;margin:0 0 12px}
.bk-about p{font-size:19px;line-height:1.7;color:var(--ink-2)}
.bk-about p.bk-note{font-size:15px;color:var(--muted)}
.bk-subjects{list-style:none;padding:0;margin:0 0 30px;display:flex;flex-wrap:wrap;gap:8px}
.bk-subjects li{padding:7px 14px;border-radius:999px;background:var(--bg-2);border:1px solid var(--line);font-size:15px;color:var(--ink-2)}
.bk-toc{margin:10px 0 0}
.bk-toc-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.bk-toc-list li{border-bottom:1px solid var(--line)}
.bk-toc-list a{display:grid;grid-template-columns:minmax(0,auto) minmax(0,1fr) auto;gap:4px 16px;align-items:baseline;padding:14px 8px;min-height:56px;text-decoration:none;color:var(--ink);border-radius:10px}
.bk-toc-list a:hover{background:var(--bg-2)}
.bk-toc-n{font-weight:700;font-size:17px}
.bk-toc-t{font-family:var(--display);font-size:18px;color:var(--ink-2)}
.bk-toc-m{font-size:14.5px;color:var(--muted);white-space:nowrap}
.bk-toc-list a.is-here{background:var(--accent-soft)}
.bk-toc-list a.is-here .bk-toc-m::before{content:"You are here · ";color:var(--accent);font-weight:700}
@media (max-width:599px){.bk-toc-list a{grid-template-columns:minmax(0,1fr) auto}.bk-toc-t{grid-column:1/-1;grid-row:2}}
.bk-toc details{margin:0}
.bk-toc summary{display:inline-flex;align-items:center;min-height:52px;margin:14px 0;padding:10px 22px;border-radius:999px;border:1px solid var(--line-2);
  font-weight:600;font-size:17px;cursor:pointer;list-style:none;background:var(--surface)}
.bk-toc summary::-webkit-details-marker{display:none}
.bk-toc details[open] summary{display:none}
.bk-more{margin:40px 0 0}
.bk-more .btn{margin-top:18px}

/* ---------- one chapter ---------- */
.bk-read{padding-bottom:40px}
.bk-read-head{margin:8px 0 22px}
.bk-read-book{font-size:17px;color:var(--muted);margin:0 0 10px}
.bk-read-book a{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.bk-read-head h1{font-size:clamp(32px,4.2vw,48px);line-height:1.12;margin:0}
.bk-read-head h1 span{display:block;font-size:.58em;line-height:1.3;color:var(--ink-2);margin-top:8px;font-style:italic}
.bk-read-meta{font-size:16px;color:var(--muted);margin:12px 0 0}

.bk-bar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:0 0 26px;padding:8px;border-radius:22px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow);max-width:560px}
.bk-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:62px;padding:6px 4px;border-radius:16px;border:0;
  background:transparent;color:var(--ink);cursor:pointer;font:600 14.5px/1.1 var(--font)}
.bk-btn:hover{background:var(--bg-2)}
.bk-btn .ric{width:24px;height:24px}
.bk-btn[aria-pressed="true"]{background:var(--accent-soft);color:var(--accent-2)}
:root[data-theme="dark"] .bk-btn[aria-pressed="true"]{color:var(--accent)}
.bk-aa{font-family:var(--display);font-weight:600;line-height:1}
.bk-aa-s{font-size:17px}
.bk-aa-l{font-size:27px}
.bk-btn-play{background:var(--accent);color:#fff}
.bk-btn-play:hover{background:var(--accent-2)}
.bk-btn-play[aria-pressed="true"]{background:var(--accent-2);color:#fff}
:root[data-theme="dark"] .bk-btn-play,:root[data-theme="dark"] .bk-btn-play[aria-pressed="true"]{color:#0f191d}
.bk-btn-play .bk-i-pause{display:none}
.bk-btn-play[aria-pressed="true"] .bk-i-pause{display:block}
.bk-btn-play[aria-pressed="true"] .bk-i-play{display:none}
.bk-btn-play.is-hint{animation:bk-pulse 1.6s ease-in-out 3}
@keyframes bk-pulse{0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 50%,transparent)}50%{box-shadow:0 0 0 10px transparent}}

.bk-player{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(18px + env(safe-area-inset-bottom));z-index:66;width:min(640px,calc(100% - 24px));
  padding:12px 14px 12px 18px;border-radius:22px;background:var(--surface);border:1px solid var(--line-2);box-shadow:var(--shadow-lg)}
.bk-player[hidden]{display:none}
.bk-player-now{margin:0 0 8px;font-size:15px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bk-player-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.bk-speed{display:flex;gap:6px;flex:1;min-width:0}
.bk-speed button,.bk-stop{min-height:48px;padding:8px 14px;border-radius:14px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);
  font:600 15.5px/1 var(--font);cursor:pointer;flex:1;white-space:nowrap}
.bk-speed button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
:root[data-theme="dark"] .bk-speed button[aria-pressed="true"]{color:#0f191d}
.bk-stop{flex:none;display:inline-flex;align-items:center;gap:8px}
.bk-stop .ric{width:18px;height:18px}
.bk-on{display:flex;align-items:center;gap:10px;margin:10px 0 0;font-size:15.5px;color:var(--ink-2);min-height:32px;cursor:pointer}
.bk-on input{width:22px;height:22px;accent-color:var(--accent)}
.bk-mark-note{margin:-14px 0 20px;font-size:16px;color:var(--ok)}

.bk-text{--bk-size:21px;font-family:var(--display);font-size:var(--bk-size);line-height:1.75;color:var(--ink);max-width:36em;overflow-wrap:break-word}
.bk-text p{margin:0 0 1.05em;padding:2px 0;border-radius:8px;scroll-margin-top:calc(var(--rail-top,96px) + 20px);transition:background .3s}
.bk-text .bk-verse{padding-left:1.4em;font-style:normal}
.bk-text p.is-reading{background:color-mix(in srgb,var(--warm-soft) 75%,transparent);box-shadow:-10px 0 0 color-mix(in srgb,var(--warm-soft) 75%,transparent),10px 0 0 color-mix(in srgb,var(--warm-soft) 75%,transparent)}
.bk-text p:target{background:var(--accent-soft)}
@media (min-width:700px){.bk-text{--bk-size:23px}}

.bk-pager{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:12px;margin:34px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.bk-pg{display:flex;align-items:center;gap:12px;min-height:72px;padding:12px 18px;border-radius:20px;border:1px solid var(--line-2);background:var(--surface);
  color:var(--ink);text-decoration:none;box-shadow:var(--shadow)}
.bk-pg:hover{border-color:var(--accent)}
.bk-pg span{display:flex;flex-direction:column;min-width:0;font-weight:600;font-size:17px;line-height:1.25}
.bk-pg small{font-size:14px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.bk-pg .ric{width:24px;height:24px;flex:none;color:var(--accent)}
.bk-pg-next{justify-content:flex-end;text-align:right;background:var(--accent);border-color:var(--accent);color:#fff}
.bk-pg-next small{color:rgba(255,255,255,.85)}
.bk-pg-next .ric{color:#fff}
:root[data-theme="dark"] .bk-pg-next{color:#0f191d}
:root[data-theme="dark"] .bk-pg-next small,:root[data-theme="dark"] .bk-pg-next .ric{color:#0f191d}
.bk-pg-toc{flex-direction:column;justify-content:center;gap:4px;padding:10px 14px}
.bk-pg-toc span{font-size:14px;font-weight:600}
@media (max-width:599px){
  .bk-pager{grid-template-columns:1fr 1fr}
  .bk-pg-next{grid-column:2;grid-row:1}
  .bk-pg-prev{grid-column:1;grid-row:1}
  .bk-pager>span:first-child{grid-column:1;grid-row:1}
  .bk-pg-toc{grid-column:1/-1;grid-row:2;flex-direction:row;min-height:56px}
}

/* Phones: the reading tools sit at the bottom of the screen, where a thumb can reach them. */
@media (max-width:699px){
  .bk-read{padding-bottom:110px}
  .bk-bar{position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:65;margin:0;max-width:none;
    box-shadow:0 -2px 10px rgba(30,42,47,.08),0 18px 40px -12px rgba(30,42,47,.45)}
  .bk-player{bottom:calc(98px + env(safe-area-inset-bottom))}
  body:has(.bk-read) .schat-dock{bottom:calc(98px + env(safe-area-inset-bottom))}
  body:has(.bk-read .bk-player:not([hidden])) .schat-dock{display:none}
}

@media print{
  .bk-bar,.bk-player,.bk-pager,.bk-mark-note,.crumbs{display:none!important}
  .bk-text{--bk-size:13pt;max-width:none}
}
@media (prefers-reduced-motion:reduce){.bk-tile .bk-cover,.bk-text p{transition:none}.bk-btn-play.is-hint{animation:none}}